Description

4-Hydroxy-3-[[5-Methyl-2-Methoxy-4-[(2-Sodiosulfo-1-Naphthalenyl)Azo]Phenyl]Azo]-7-(Phenylamino)Naphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate essential for producing vibrant and stable colorants. Its complex molecular structure provides excellent chromophore properties, making it a critical component for achieving specific, high-performance hues in demanding applications. This compound is primarily required by manufacturers in the textile, ink, and specialty polymer industries seeking reliable and consistent color quality.

Application

• Textile Dyeing: A key intermediate for synthesizing high-grade, wash-fast azo dyes for natural and synthetic fibers.
• Ink Formulation: Used in the production of pigments for industrial inks, including packaging and security inks.
• Plastic and Polymer Coloring: Imparts color to engineering plastics and specialty polymers requiring thermal and light stability.
• Paper Coating: Serves as a colorant in high-quality paper coatings and decorative laminates.
• Leather Finishing: Employed in dye formulations for achieving deep, uniform colors on leather goods.
• Research & Development: Used as a standard or precursor in chemical research for developing new chromophores and functional dyes.

Basic Information

Product Name	4-Hydroxy-3-[[5-Methyl-2-Methoxy-4-[(2-Sodiosulfo-1-Naphthalenyl)Azo]Phenyl]Azo]-7-(Phenylamino)Naphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	6227-19-6
Molecular Formula	C34H26N5Na2O8S2
Molecular Weight	751.70 g/mol
Synonyms	Acid Red 299; C.I. 18130; 7-(Phenylamino)-4-hydroxy-3-[[5-methyl-2-methoxy-4-[(2-sulfo-1-naphthalenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid, disodium salt; 2-Naphthalenesulfonic acid, 7-(phenylamino)-4-hydroxy-3-((5-methyl-2-methoxy-4-((2-sulfo-1-naphthyl)azo)phenyl)azo)-, disodium salt; Disodium 7-anilino-4-hydroxy-3-((5-methyl-2-methoxy-4-((2-sulfo-1-naphthyl)azo)phenyl)azo)naphthalene-2-sulfonate; Azo dye intermediate 6227-19-6; C.I. Acid Red 299
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to rigorous quality control protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed using advanced techniques like HPLC to verify the assay and impurity profile, ensuring it meets the stringent requirements of industrial dye synthesis. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and specific tests is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); protect from excessive humidity and direct light exposure.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.